Published online by Cambridge University Press: 11 May 2009
Three genera of Acanthonotozomatidae have been recorded from the British Isles, Iphimedia, Panoploea and Odius. The latter genus is distinctive, but the former two differ from one another only in the relative development of the palp of maxilla 1, which is variable throughout the group. It is shorter than the outer plate in P. minuta and P. eblanae, a little shorter than the outer plate in I. vicina, equal in length to the outer plate in I. quasimodius and longer than the outer plate in I. obesa and I. serratipes. There appears, therefore, to be no good phylogenetic justification for separating the two genera, and following Ruffo & Schiecke (1979, 1982) the genus Panoploea is relegated to the synonymy of Iphimedia.